Beef has been proven to cure the symptoms you describe because it is something known as "food". I wouldn't recommend you eat any old beef though. Some of it comes from cattle reared on land cleared from rain forests. My personal favourite is wagyu beef as it comes from very well cared for cattle.

http://www.youtube.com/watch?v=DFPMOxQB1tg

I'm reliably informed that NOT eating beef is less green than eating well selected beef- for example, male cattle from dairy herd are acceptable as food sources. As envirosnoop rightly says, a lot of beef is from beef herd (natch) which are grazed unsustainably, and rather destructively on what used to be pristine primary rainforest! Not. Good.
(Other things about beef: cows produce an awful lot of methane, which is another reason its 'ok' to eat dairy herd but not beef herd, also they take an awful lot of water and food to produce a small amount of meat. Beef is also not fully digestible and so should be eaten sparingly... oh, and if you are worried about encephalitis then probably avoid beef like the plague... who wants sponge for a brain?!)

Beef, in fact all the imported, domesticated hard-hoofed animals, are bad for Australia.
Our soil never saw a hard-hoofed animal until about 200 years ago when the country was colonised. As such, you can see how badly the land has been degraded. Not only vast swathes of forest have been cleared for cattle, but because the continent's soil is so poor (through lack of ice in the ice-age - but that's another story) it takes a hell of a lot of time for the soil and ecology to recover. Unlike, say, the UK, where soil is richer in nutrients and bounces back a little easier.

But that doesn't mean it's good in the UK either. There are also factors such as the amount of crops needed to grow food enough for cattle (monocultures, lack of ecology in such farming, huge resources in pesticides, herbicides, etc.). And run-off from paddocks into streams and rivers. As well as the methane issue.

So, in short, do not eat beef, especially in Australia. Eat kangaroo, which is much better for our environment.

Personally, I'm vegetarian mostly for environmental reasons. But if I became a carnivor again, I'd be eating skippy.